<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
      <script>
        var arr = [{label:'男',value: 1}, {label:'女',value: 0}]

        function f(arr) {
          // 写代码，得到
          let obj1={}
          arr.map((item,index)=> {
            obj1[item.value]=item.label
          })
          return obj1
        }
        var obj = f(arr);
        console.log(obj)
        // obj = {'1': '男'， '0': '女'}
      </script>
</body>
</html>
